Linux Systems Administrator


The Johns Hopkins University Applied Physics Laboratory (APL), a national leader in scientific research and development, located midway between Baltimore and Washington, DC is seeking an Systems Administrator. The Air and Missile Defense Sector creates innovative solutions to our Nation' s most difficult challenges posed by evolving aircraft, missile, and surface threats. Contribute to this mission by joining the Technical Facilities Systems Administration Group (ADX).

Job Summary:

Support Linux for APL's Air and Missile Defense Sector in classified and unclassified environments. This role requires someone with customer service skills and an ability to quickly troubleshoot and resolve end user issues for Linux workstations and servers. Proactively support hundreds of users and hundreds of servers/workstations.


  1. Primarily work with users to resolve Linux related support tickets. This may include troubleshooting Linux Servers and Workstations, performing root cause analysis, modifying configurations, contributing to Ansible, network analysis, NAS troubleshooting, scripting, monitoring or other tasks as needed. Collect requirements as needed and escalate if needed.
  2. Manage Linux based services and applications such as the Atlassian Suite as requested and assist with projects as needed. Will build workstation and servers along with applying security controls and associated documentation.
  3. Self-educate about facility security requirements and adhere to policy to assure protection of all classified information

Note: This job summary and listing of duties is for the purpose of describing the position and its essential functions at time of hire and may change over time.


Required Qualifications:
  • Bachelors degree in Computer Science or equivalent relevant discipline with at least 3 (three) years' experience in Linux/Unix system administration .
  • Experience with computer hardware setup and configuration. Ability to troubleshoot problems in computer networks, computer hardware, and computer operating system configuration and operation.
  • Ability and desire to work well with a wide variety of end-users with differing needs and experience.
  • Strong organizational skills, ability to work in a team and independently as well as multi-task effectively.
  • Current DoD 8570 certification or ability to obtain certification within 3 months of offer.
  • Active Secret or Top Secret or ability to obtain Secret clearance and Security +CE Certification.

Desired Qualifications:

  • Expertise in managing Solaris, CentOS/RedHat Linux.
  • Knowledge of classified computer facility operational procedures and NISPOM, DSS, or other DOD security regimes.
  • Experience with heterogeneous Windows and Linux environments and data center operations including infrastructure, systems monitoring, and computer clusters of 100+ computers.
  • Hands-on experience with most of the following enterprise storage technologies: NFS/RAID/ISCSI/ZFS.
  • Ability to develop scripts to automate repeatable tasks.
  • Proven ability and interest in documenting systems and operational procedures.
  • Preference for current security clearance.

Special Working Conditions: Must be able to perform moderate lifting to move computer and network equipment. Some work outside normal working hours and on weekends must be performed for operations and maintenance.

Security: Applicant selected will be subject to a government security clearance investigation and must meet the requirements for access to classified information. Eligibility requirements include U.S. citizenship.

Benefits: APL offers a comprehensive benefits package including a liberal vacation plan, a matching retirement program, significant educational assistance, a scholarship tuition program for staff with dependents, and competitive salaries commensurate with skills and experience. For more information about our organization, please visit our web site at

Equal Employment Opportunity: Johns Hopkins University/Applied Physics Laboratory (APL) is an Equal Opportunity/Affirmative Action employer that complies with Title IX of the Education Amendments Acts of 1972, as well as other applicable laws. All qualified applicants will receive consideration for employment without regard to race, color, religion, sexual orientation, gender identity, national origin, disability, or protected Veteran status.

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